Um, this hasn't been touched on much, so I'll say it. The purpose of language is to communicate specific ideas or emotions to one another. So what makes a word profane? Society makes it profane. The reason no one can tell you exactly why one word is worse than another (with a few exceptions, such as damn, which have background) is because no one questions it. I agree with most things said, except a bit by Fat_Bastard.
Those aren't exactly logical things you can draw from the fact that he says he shouldn't be judged by his use of profanity. Personally, I'm not offended by profanity at all at any occassion, because I understand that it doesn't mean all that much. A profanity is just a vocal chord vibration that we're conditioned to understand is taboo. Most modern profanites (I won't list them) are slang words that have no etymolgy, are totally made up. Prove me wrong please, I love a good argument.